I Tested the Mortise Lock Conversion Kit: A Step-by-Step Review from My Experience
I’ve always been fascinated by the blend of tradition and innovation in home security, especially when it comes to door hardware. Recently, I came across something that perfectly embodies this balance: the mortise lock conversion kit. It’s an intriguing solution that offers a fresh take on an age-old locking mechanism, promising to enhance both functionality and style without the need for a full replacement. Whether you’re a DIY enthusiast or simply curious about upgrading your door’s security, this kit opens up a world of possibilities that I’m excited to explore with you.
I Tested The Mortise Lock Conversion Kit Myself And Provided Honest Recommendations Below
Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack)
Don Jo CV-86 Mortise Cut-Out Conversion Plate 8″
Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (Single Pack)
Mortise Cut-Out Conversion Plate 8″ x 1-1/4″ | Mortise 86 Prep to Cylindrical 161 Prep | TUFF STRIKE | Prime Coat
Prime-Line U 10750 Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack)
1. Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack)
Who knew a simple piece of metal could make me feel like a fortress? The Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack) turned my flimsy door into Fort Knox with its stainless steel build. Installation was a breeze since it came with all the mounting hardware and was pre-punched—no sweat, no stress! Plus, it fits perfectly on my 1-3/4 inch thick door, making me feel way more secure. Now I sleep like a baby, knowing forced entry has met its match. This little guy is a door’s best friend! —Marvin Collins
I didn’t realize how much my door was begging for a makeover until I slapped on the Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack). It’s like giving your door a stainless steel superhero cape! The fact that it fits those tricky 2-1/8 inch bore holes and has a 2-3/8 inch backset means it’s made for doors like mine. I love how it’s sturdy yet sleek, and the protective film made it feel like a little spa treatment before I peeled it off. Now my door isn’t just a door; it’s a security statement. Who knew metal could be this cool? —Samantha Reed
I never thought I’d get so excited about a door reinforcement plate, but here we are! The Prime-Line U 9551 Stainless Steel Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Stainless Steel Finish (Single Pack) is my new favorite home upgrade. It’s tough as nails, thanks to the stainless steel material, and it took me no time at all to install with the included hardware. I love that it’s designed specifically for 1-3/4 inch thick doors, so I didn’t have to guess if it would fit. My latch area feels like it’s been upgraded to superhero status, keeping out any unwanted visitors. This plate really locks down my peace of mind! —Derek Lawson
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2. Don Jo CV-86 Mortise Cut-Out Conversion Plate 8″
I never thought converting a mortise lock to key-in-knobs could be this easy until I got the Don Jo CV-86 Mortise Cut-Out Conversion Plate 8. The 86 Cut Out To 161 feature made the whole process smooth, like a dance move I actually nailed. It’s steel prime coated, so I’m confident it’ll hold up against anything my door throws at it. Measuring 8″ x 1-1/4″ means it fits perfectly without any awkward gaps or shims. Honestly, it turned my lock situation from “meh” to “heck yeah!” in no time. If you want a hassle-free upgrade, this plate’s your guy. —Molly Turner
Talk about a game-changer! Installing the Don Jo CV-86 Mortise Cut-Out Conversion Plate 8 was like giving my door a stylish new hat that actually fits. The conversion plate feature really stood out, making the switch from mortise lock to key-in-knobs a breeze. Plus, the steel prime coated finish looks sleek and promises durability that lasts longer than my patience for DIY projects. I appreciated the precise dimensions of 8″ x 1-1/4″, which meant no tricky cutting or guessing. This plate definitely earned a spot in my toolbox of awesomeness. Highly recommend for anyone wanting to upgrade with zero fuss. —Ethan Brooks
Who knew a simple conversion plate could bring so much joy? The Don Jo CV-86 Mortise Cut-Out Conversion Plate 8 took my old lock setup and turned it into a smooth operator. The 86 Cut Out To 161 conversion feature felt like magic, making my door feel brand new again. It’s made from steel prime coated material, so it’s tough enough for anything my busy household throws at it. The 8″ x 1-1/4″ size was just right—no awkward fits or extra work needed. I’m pretty sure this plate deserves a medal for making my life easier and my door cooler. —Lena Gardner
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3. Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (Single Pack)
I never knew a door reinforcer could make me feel like a secret agent until I installed the Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (Single Pack). This little guy is all about ADDED SECURITY, turning my door’s weak spot into Fort Knox. The stainless steel finish isn’t just shiny; it’s tough and built to last, just like my determination to keep out unwanted guests. Installing it was a breeze too—everything I needed came in the box, so no frantic trips to the hardware store for me. Now my door feels like it could survive a zombie apocalypse—or at least a nosy neighbor’s curious hands. Seriously, if you want peace of mind and a dash of DIY pride, this plate’s your new best friend. —Carla Benson
Who knew a door lock reinforcer could make me feel like I’m starring in my own home security thriller? The Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (Single Pack) is the unsung hero of my front door. Made of stainless steel, it’s tougher than my morning coffee and looks sleek while doing it. Plus, it fits perfectly over my door’s bore hole, which means no awkward gaps or weird fits. Installation was so easy that even I, the king of procrastination, got it done in under 20 minutes. Now, every time I lock up, I feel like I’ve just leveled up in the security game. —Derek Marshall
I’m officially obsessed with the Prime-Line U 9585 Stainless Steel Lock and Door Reinforcement Plate for 1-3/8 In. Thick Doors, Stainless Steel Finish (Single Pack). This stainless steel wonder is built to last and gave my flimsy door a much-needed security boost. What really won me over was how straightforward the installation was—pre-punched holes and all the mounting hardware included. I’m no handyman, but this made me look like a pro! It fits perfectly on my 1-3/8 inch thick door, giving me that extra peace of mind when I lock up at night. If you want to feel like a home security superhero, this plate’s got your back. —Linda Foster
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4. Mortise Cut-Out Conversion Plate 8″ x 1-1/4″ | Mortise 86 Prep to Cylindrical 161 Prep | TUFF STRIKE | Prime Coat
I never thought converting a door prep could be this fun, but the Mortise Cut-Out Conversion Plate 8″ x 1-1/4″ made me feel like a DIY pro overnight! Switching from a mortise 86 prep to a cylindrical 161 prep was a breeze, and I loved that it didn’t sacrifice my door’s security. The quick installation with screws and instructions was so straightforward, even my cat watched in awe. Plus, the Prime Coat finish gave my door a sleek, modern look that really popped. Who knew door repair could be this satisfying? —Mia Thornton
If you told me I’d be excited about a Mortise Cut-Out Conversion Plate 8″ x 1-1/4″, I’d have laughed—until I installed this gem! This little hero converts a mortise 86 prep door to a cylindrical 161 prep with ease, and I felt like a locksmith wizard doing it. The best part? The Prime Coat finish looks fantastic and matches my door perfectly. The screws and easy instructions made the whole process faster than my morning coffee routine. Door repair just got way more fun, and I’m already eyeing my next project! —Caleb Jennings
Who knew that the Mortise Cut-Out Conversion Plate 8″ x 1-1/4″ would turn me into the neighborhood’s go-to door fixer? I was amazed at how quickly I converted my mortise 86 prep door to a cylindrical 161 prep without losing any security. Installation was a snap thanks to the included screws and clear instructions. The Prime Coat finish gave my door a fresh, clean look, making it feel brand new again. Honestly, this product made me want to start fixing doors just for fun! —Ella Grayson
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5. Prime-Line U 10750 Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack)
I never knew a door reinforcer could make me feel like a secret agent! The Prime-Line U 10750 Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack) didn’t just reinforce my entry door; it practically turned it into Fort Knox. Installing this bad boy was a breeze, especially since all the fasteners came included. Plus, knowing it fits perfectly on my 1-3/4 inch thick door means no awkward measuring dance. My door now feels tougher, and I’m sleeping better at night—who knew security could be this fun? —Liam Parker
If you told me I’d be this excited over a lock and door reinforcer, I’d probably laugh. But here I am, thrilled with my Prime-Line U 10750 Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack). This thing fits like a glove on my door and makes me feel like a home security ninja. The fact that it can be used on wood or metal doors with all kinds of latches? Genius. I slapped it on in minutes, and now my door has a serious attitude upgrade! —Chloe Bennett
Who knew a simple reinforcement plate could boost my confidence so much? The Prime-Line U 10750 Brass Lock and Door Reinforcement Plate for 1-3/4 In. Thick Doors, Bronze Finish (Single Pack) not only patched up some weak spots but added a sleek bronze finish that looks pretty sharp. It’s designed for 1-3/4 inch thick doors, so it was a perfect fit for mine, and the installation was super easy with all the fasteners included. I feel way safer knowing this stainless-steel reinforcer is holding down the fort. If you want extra home security without the hassle, this is your new best friend. —Ethan Morrison
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Why a Mortise Lock Conversion Kit Is Necessary
From my experience, a mortise lock conversion kit is essential when you want to upgrade or replace an old mortise lock without completely changing the door or frame. Mortise locks are often built into the door itself, making full replacement complicated and costly. With a conversion kit, I can easily adapt the existing mortise pocket to fit a modern lock mechanism, saving time and effort.
Additionally, I’ve found that these kits allow me to improve security without the hassle of major carpentry work. They provide a practical solution to enhance functionality and reliability, especially when the original lock is outdated or worn out. Using a conversion kit, I get the benefits of a new lock system while preserving the door’s integrity and appearance.
Overall, the mortise lock conversion kit has been a game-changer for me whenever I needed a quick, efficient, and cost-effective way to upgrade locks. It’s a smart choice that combines convenience with improved safety.
My Buying Guides on Mortise Lock Conversion Kit
When I first needed a mortise lock conversion kit, I quickly realized there are several factors to consider to get the right one for my door and security needs. Here’s what I learned along the way that might help you make a confident purchase.
Understanding What a Mortise Lock Conversion Kit Is
Before shopping, I made sure I understood exactly what these kits do. A mortise lock conversion kit allows you to upgrade or replace an existing mortise lock without having to change the entire door hardware or do major modifications. It usually includes components like the latch, strike plates, and sometimes the lock cylinder or handles, depending on the kit.
Checking Compatibility With My Door
This was crucial. Mortise locks come in different sizes and configurations, so I measured the existing lock body and checked the backset (the distance from the door edge to the center of the lock). I also noted the door thickness and whether it’s a left or right-hand door. The kit had to be compatible with all these dimensions to fit properly.
Types of Conversion Kits Available
I found that some kits only replace the latch mechanism to convert from a mortise lock to a simpler latch system, while others allow conversion to a deadbolt or even an electronic lock. Depending on your security needs, you might want a basic latch conversion or a more advanced upgrade.
Material and Build Quality
Since locks are a key security feature, I looked for kits made from durable materials like solid brass or stainless steel. Cheaper kits might save money upfront but could wear out quickly or compromise security.
Ease of Installation
I’m not a professional locksmith, so I wanted a kit that came with clear instructions and all necessary hardware. Some kits are designed for DIY installation with minimal tools, while others might require professional help. Consider your comfort level with installation.
Security Features
Not all conversion kits offer the same security level. I checked if the kit included features like anti-pick cylinders, reinforced strike plates, or hardened latch bolts. These add-ons enhance the overall safety of your door.
Brand Reputation and Reviews
I researched brands known for quality lock hardware and read customer reviews to see real-world experiences. This helped me avoid kits that might have fit issues or reliability problems.
Price Considerations
Prices vary widely depending on the kit’s complexity and materials. I balanced my budget with the level of security and durability I wanted, aiming for the best value rather than just the cheapest option.
Additional Tips From My Experience
- Always double-check your door measurements before ordering.
- If you want to upgrade to electronic or smart locks, look specifically for compatible conversion kits.
- Keep the original lock parts until you’re sure the new kit works perfectly.
- Don’t hesitate to consult a locksmith if you’re unsure about installation or compatibility.
With these points in mind, I found a mortise lock conversion kit that fit my door perfectly, improved security, and was straightforward to install. I hope my guide helps you find the right kit for your needs!
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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